﻿var fs = require('fs');
var data = '';

//创建可读流
var readerStream = fs.createReadStream('input.txt');

// 设置编码为UTF8
readerStream.setEncoding('UTF8');

// 处理流事件 data  end  error
readerStream.on('data',function(chunk){
	data += chunk
	console.log(Buffer.isBuffer(data))  //false
});

readerStream.on('end',function(){
	console.log(data);
	
});

readerStream.on('error',function(err){
	console.log(err.stack)
})

console.log("执行完毕")














